Nonlocality parameters of microscopic optical potentials from Skyrme-based nuclear structure models at low energies

2025/08/18 by Do Quang Tam, Tam, Do Quang, Tung, N. Hoang +4
Physics and Astronomy · #FOS: Physical sciences #High-Energy Particle Collisions Research #Nuclear Theory (nucl-th) #Nuclear physics research studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.2508.12699

openalex publication_date 2025/08/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We investigate the non-locality parameters β in nucleon-nucleus interactions for ¹⁶O , ⁴⁰Ca , ⁴⁸Ca , and ²⁰⁸Pb using a microscopic optical potential (MOP) derived from nuclear structure models based on Skyrme self-consistent mean-field calculations at low incident energies. No ad hoc adjusted parameters were employed in the present calculations. The analysis reveals that the non-locality parameter exhibits a clear dependence on the radial position within the nucleus, the incident nucleon energy, and the choice of target nucleus. At incident energies below 30 MeV, the β lies between 0.8 fm and 1.2 fm for all considered targets. For the light nucleus ¹⁶O, the non-locality parameter in the interior is smaller than that on the surface, whereas for medium and heavy nuclei ( ⁴⁰Ca , ⁴⁸Ca , and ²⁰⁸Pb ), the values are comparable in both regions.

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